Assume that x, y ER and z = x + iy E C and answer the followings: 1. Evaluate sin(i) =?, cos(i) =? , tan(1 + i) =? 2. Evaluate Re{sin(x + iy)} =?, Im{cos(x – iy)} =? in terms of x, y. 3. Evaluate |sin(z)²| in terms of x, y.

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A: We have  to simplify

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A: vector product

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Q: Find

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